NDLI: Magnetization processes in spin-valve meanders for sensor applications

Content Provider	IEEE Xplore Digital Library
Author	Schafer, R. Chumakov, D. de Haas, O. Schultz, L. Maass, W. Barholz, K.-U. Mattheis, R.
Copyright Year	1965
Abstract	We used Kerr microscopy to investigate the magnetization processes of NiFeCo/Cu/Co/FeMn spin-valve meanders for magnetoresistive sensors and compared them to processes in related single films and bilayers. We observed irregular switching, characterized by the irreversible decay of blocked domains or by domain nucleation at 360/spl deg/ walls, in the related films and in the free layer of the spin-valve system. Both effects are connected with hysteresis. Edge-curling walls are responsible for rotational hysteresis in the giant magnetoresistance signal of the spin valves, occurring during field rotation in clockwise and counterclockwise directions. The U-turns of the meanders and their shape have no relevant influence on the magnetization behavior and hysteresis effects.
Sponsorship	IEEE Magnetics Society
Starting Page	2089
Ending Page	2097
Page Count	9
File Size	10042226
File Format	PDF
ISSN	00189464
Volume Number	39
Issue Number	4
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2003-07-01
Publisher Place	U.S.A.
Access Restriction	One Nation One Subscription (ONOS)
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Magnetization processes Magnetic sensors Hysteresis Sensor phenomena and characterization Magnetic force microscopy Gas detectors Giant magnetoresistance Spin valves Clocks Shape
Content Type	Text
Resource Type	Article
Subject	Electronic, Optical and Magnetic Materials Electrical and Electronic Engineering

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